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Re: Europa-List: Re: Effects of Flaps and Ailerons on Pitch Trim

Subject: Re: Europa-List: Re: Effects of Flaps and Ailerons on Pitch Trim
From: Frans Veldman <frans@privatepilots.nl>
Date: Wed, 12 May 2010 15:52:32

On 05/12/2010 03:22 PM, Peter Zutrauen wrote:

> Your thesis assumes that the tailplane is aerodynamically balanced wrt
> to the torque-tube position, and the only aerodynamic component which is
> stabilizing it and keeping it from flutter is the anti-servo tab. 

Stabilizing, but not necessarily keeping it from flutter. I think that
the mass balance weight is to keep it from flutter, just as with the
ailerons (that don't need to have a trim tab for that either).

> I would expect/hope that the tailplane would remain aerodynamically
> stable without the anti-servo tab, and that the tab is there only to
> provide for progressive stick forces, and trim.

This is how it works I believe. At least is seems so on the PH-DIY. ;-)

Frans



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